Issues with stock pricing and difficulty level

I have played quite a few games now, and the one reoccurring theme is an issue with stock pricing. The stock pricing doesn't make sense and doesn't seem to keep up with company value changes. 

 

1) In the latest game, I had $2.5 million in cash on hand and owned 4 level 5 companies (mine plus 3 others). I owned all my own stock and 70% of the remaining person's stock. His total buyout price for my company was about $1.5 million. My debt was about $80k at the time, and falling at a rate of about $780 per second. His remaining buyout cost for me was about $380k. That means his total buyout value was roughly $1.2 million (I owned $886,000 of his stock). How on Mars can he buy over $5 million worth of my company value, plus $886k of his own company value for $1.5 million? My company buyout value should have been around $6 million if I did all my math correctly. 

2) In one game, I was playing along and there was 60% of my stock unowned. Then, I suddenly got a termination notice out of the blue. I went to observer mode and another play had bought out my company. 

3) Difficulty level changes need to reset the "ready" state of all players when one player changes their difficulty level. I hosted a game and everyone was set to manager, but then right before I hit the Play button, one of the players must have changed their difficulty level. I managed to hit level 4 while everyone else was either level 2 or level 1. Right before I hit level 5, one of the players hit level 3. Right after I hit level 5, they went to level 4. Then a minute or so later, they went to level 5. Right as I started construction of my offworld market, they started buying shares of my company. So I started buying shares of their company figuring I was ahead in building my offworld market and would easily outpace them since I was heavily weighted to producing the higher Mars-priced resources. But they just kept buying and buying and buying and then bought me out as my first offworld export was launching. I went to observer mode and realized they had set themselves to Intern while I was playing at Manager. 

4) It would be better if all players had to approve another player setting their difficulty to lower than manager.